Simultaneous Nadir Overpasses (SNOs) between METOP-A and NPP
TLE Epoch: 2018 4 6.  Predictions up to the next  14.0 days:

     Date     Time(METOP-A) METOP-A Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/20/2018   07:57:03   (  73.82,  52.84) 04/20/2018   07:55:55  (  73.81,  50.49)   72.78                68
 04/20/2018   08:47:47   ( -73.74,-140.03) 04/20/2018   08:46:37  ( -73.69,-141.90)   58.78                70
 04/20/2018   09:38:31   (  73.49,  26.75) 04/20/2018   09:37:19  (  73.52,  25.81)   29.80                72
 04/20/2018   10:29:15   ( -73.41,-166.11) 04/20/2018   10:28:01  ( -73.40,-166.60)   15.69                74
 04/20/2018   11:19:57   (  73.26,   0.90) 04/20/2018   11:18:44  (  73.27,   0.99)    2.97                73